I reached out to my ideal customer and told them I have an idea to solve a problem of theirs. They said they would love to use something like that, and they're helping me build my MVP.

Without reaching out to my customer first, my MVP wouldn't have solved their needs as effectively -- and there would have been too many holes in critical use cases.

After watching all the Steve Blank videos on Youtube, I'm a believer in "get out of the building and talk to customers".